BKDR_ZEGOST.SMM

To delete the registry value this malware/grayware created:

1. Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
2. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services
3. In the right panel, locate and delete the entry:
   Type = 12
4. In the left panel, double-click the following:
   HKEY_CLASSES_ROOT
5. In the right panel, locate and delete the entry:
   .grp = "MSProgramGroup"
6. Again In the right panel, locate and delete the entry:
   MSProgramGroup = "Microsoft Program Group"
7. Again In the right panel, locate and delete the entry:
   MSProgramGroup\Shell\Open\Command = "%System%\grpconv.exe %1"
8. Close Registry Editor.

To restore registry values this malware/grayware modified:

1. Open Registry Editor. To do this:
   
   • On Windows 2000, XP, and Server 2003:
     Click Start>Run, type REGEDIT in the text box provided, and then press Enter.
   • On Windows Vista and 7:
     Click the Start button, type REGEDIT in the Search input field then press Enter.
2. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>GrpConv
3. In the right panel, locate the registry value:
   Log = "Init Application."
4. Right-click on the value name and choose Modify. Change the value data of this entry to:
   Log = Uninit Application.
5. Again In the right panel, locate the registry value:
   Log = "bdg: ..."
6. Right-click on the value name and choose Modify. Change the value data of this entry to:
   Log = Uninit Application.
7. Again In the right panel, locate the registry value:
   Log = "bdg: Done."
8. Right-click on the value name and choose Modify. Change the value data of this entry to:
   Log = Uninit Application.
9. Again In the right panel, locate the registry value:
   Log = "dros: ..."
10. Right-click on the value name and choose Modify. Change the value data of this entry to:
    Log = Uninit Application.
11. Again In the right panel, locate the registry value:
    Log = "dros: Renames."
12. Right-click on the value name and choose Modify. Change the value data of this entry to:
    Log = Uninit Application.
13. Again In the right panel, locate the registry value:
    Log = "dros: Copies."
14. Right-click on the value name and choose Modify. Change the value data of this entry to:
    Log = Uninit Application.
15. Again In the right panel, locate the registry value:
    Log = "dros: Deletes."
16. Right-click on the value name and choose Modify. Change the value data of this entry to:
    Log = Uninit Application.
17. Again In the right panel, locate the registry value:
    Log = "dros: Done."
18. Right-click on the value name and choose Modify. Change the value data of this entry to:
    Log = Uninit Application.
19. Again In the right panel, locate the registry value:
    Log = "Uninit Application."
20. Right-click on the value name and choose Modify. Change the value data of this entry to:
    Log = Uninit Application.
21. Close Registry Editor.

To delete malware/grayware component files:

1. Search for the following files:
   
   • %System%\systeminf.inf
   • %System Root%\Documents AND Settings\apple.bat
   • %System%\Thumdb.dll
   • %System%\111061617.exe
   • appledel.bat
   
   Note: To do a search for the following files, right-click Start then click Search... or Find..., depending on the version of Windows you are running. For each file to be deleted, type its file name in the Named input box. In the Look In drop-down list, select My Computer, then press Enter.
2. Once located, select the file then press SHIFT+DELETE to permanently delete the file.
3. Repeat the said steps for all files listed.